Downgrade to 4.3 from 5.0.1

[FakerS3]

Hi i tested many roms and they are amazing but i dont like lolipop look i prefer older ui like 4.3 or 4.4.2
I have used twrp to backup system offical 4.3 before upgrading to lolipop with odin and can i downgrade or not
And i have ss with all files that i backed up

 

[Pruikki]

Sure,Downgrade if you did full backup

 

[rastry]

Bauck up?

Sure,Downgrade if you did full backup

Link to BACKUP?